samples/treectrl/treetest.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        treetest.cpp
   3 // Purpose:     wxTreeCtrl sample
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifdef __GNUG__
  13   #pragma implementation
  14   #pragma interface
  15 #endif
  16
  17 // For compilers that support precompilation, includes "wx/wx.h".
  18 #include "wx/wxprec.h"
  19
  20 #ifdef __BORLANDC__
  21   #pragma hdrstop
  22 #endif
  23
  24 #ifndef WX_PRECOMP
  25   #include "wx/wx.h"
  26   #include "wx/log.h"
  27 #endif
  28
  29 #include "wx/colordlg.h"
  30 #include "wx/numdlg.h"
  31
  32 #include "wx/image.h"
  33 #include "wx/imaglist.h"
  34 #include "wx/treectrl.h"
  35 #include "wx/math.h"
  36
  37 #ifdef __WIN32__
  38     // this is not supported by native control
  39     #define NO_VARIABLE_HEIGHT
  40 #endif
  41
  42 #include "treetest.h"
  43
  44 #include "icon1.xpm"
  45 #include "icon2.xpm"
  46 #include "icon3.xpm"
  47 #include "icon4.xpm"
  48 #include "icon5.xpm"
  49
  50 #if defined(__WXGTK__) || defined(__WXX11__) || defined(__WXMOTIF__) || defined(__WXMAC__) || defined(__WXMGL__)
  51 #include "mondrian.xpm"
  52 #endif
  53
  54
  55 // verify that the item is ok and insult the user if it is not
  56 #define CHECK_ITEM( item ) if ( !item.IsOk() ) {                                 \
  57                              wxMessageBox(wxT("Please select some item first!"), \
  58                                           wxT("Tree sample error"),              \
  59                                           wxOK | wxICON_EXCLAMATION,             \
  60                                           this);                                 \
  61                              return;                                             \
  62                            }
  63
  64 #define MENU_LINK(name) EVT_MENU(TreeTest_##name, MyFrame::On##name)
  65
  66 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
  67     EVT_IDLE(MyFrame::OnIdle)
  68     EVT_SIZE(MyFrame::OnSize)
  69
  70     MENU_LINK(Quit)
  71     MENU_LINK(About)
  72
  73     MENU_LINK(TogButtons)
  74     MENU_LINK(TogTwist)
  75     MENU_LINK(TogLines)
  76     MENU_LINK(TogEdit)
  77     MENU_LINK(TogHideRoot)
  78     MENU_LINK(TogRootLines)
  79     MENU_LINK(TogBorder)
  80     MENU_LINK(TogFullHighlight)
  81     MENU_LINK(SetFgColour)
  82     MENU_LINK(SetBgColour)
  83     MENU_LINK(ResetStyle)
  84
  85     MENU_LINK(Dump)
  86 #ifndef NO_MULTIPLE_SELECTION
  87     MENU_LINK(DumpSelected)
  88     MENU_LINK(Select)
  89     MENU_LINK(Unselect)
  90     MENU_LINK(ToggleSel)
  91 #endif // NO_MULTIPLE_SELECTION
  92     MENU_LINK(Rename)
  93     MENU_LINK(Count)
  94     MENU_LINK(CountRec)
  95     MENU_LINK(Sort)
  96     MENU_LINK(SortRev)
  97     MENU_LINK(SetBold)
  98     MENU_LINK(ClearBold)
  99     MENU_LINK(Delete)
 100     MENU_LINK(DeleteChildren)
 101     MENU_LINK(DeleteAll)
 102     MENU_LINK(Recreate)
 103     MENU_LINK(ToggleImages)
 104     MENU_LINK(ToggleButtons)
 105     MENU_LINK(SetImageSize)
 106     MENU_LINK(CollapseAndReset)
 107     MENU_LINK(EnsureVisible)
 108     MENU_LINK(AddItem)
 109     MENU_LINK(InsertItem)
 110     MENU_LINK(IncIndent)
 111     MENU_LINK(DecIndent)
 112     MENU_LINK(IncSpacing)
 113     MENU_LINK(DecSpacing)
 114     MENU_LINK(ToggleIcon)
 115     MENU_LINK(SelectRoot)
 116 #undef MENU_LINK
 117
 118 END_EVENT_TABLE()
 119
 120 #if USE_GENERIC_TREECTRL
 121 BEGIN_EVENT_TABLE(MyTreeCtrl, wxGenericTreeCtrl)
 122 #else
 123 BEGIN_EVENT_TABLE(MyTreeCtrl, wxTreeCtrl)
 124 #endif
 125     EVT_TREE_BEGIN_DRAG(TreeTest_Ctrl, MyTreeCtrl::OnBeginDrag)
 126     EVT_TREE_BEGIN_RDRAG(TreeTest_Ctrl, MyTreeCtrl::OnBeginRDrag)
 127     EVT_TREE_END_DRAG(TreeTest_Ctrl, MyTreeCtrl::OnEndDrag)
 128     EVT_TREE_BEGIN_LABEL_EDIT(TreeTest_Ctrl, MyTreeCtrl::OnBeginLabelEdit)
 129     EVT_TREE_END_LABEL_EDIT(TreeTest_Ctrl, MyTreeCtrl::OnEndLabelEdit)
 130     EVT_TREE_DELETE_ITEM(TreeTest_Ctrl, MyTreeCtrl::OnDeleteItem)
 131 #if 0       // there are so many of those that logging them causes flicker
 132     EVT_TREE_GET_INFO(TreeTest_Ctrl, MyTreeCtrl::OnGetInfo)
 133 #endif
 134     EVT_TREE_SET_INFO(TreeTest_Ctrl, MyTreeCtrl::OnSetInfo)
 135     EVT_TREE_ITEM_EXPANDED(TreeTest_Ctrl, MyTreeCtrl::OnItemExpanded)
 136     EVT_TREE_ITEM_EXPANDING(TreeTest_Ctrl, MyTreeCtrl::OnItemExpanding)
 137     EVT_TREE_ITEM_COLLAPSED(TreeTest_Ctrl, MyTreeCtrl::OnItemCollapsed)
 138     EVT_TREE_ITEM_COLLAPSING(TreeTest_Ctrl, MyTreeCtrl::OnItemCollapsing)
 139     //EVT_TREE_ITEM_RIGHT_CLICK(TreeTest_Ctrl, MyTreeCtrl::OnItemRightClick)
 140
 141     EVT_CONTEXT_MENU(MyTreeCtrl::OnContextMenu)
 142     EVT_TREE_SEL_CHANGED(TreeTest_Ctrl, MyTreeCtrl::OnSelChanged)
 143     EVT_TREE_SEL_CHANGING(TreeTest_Ctrl, MyTreeCtrl::OnSelChanging)
 144     EVT_TREE_KEY_DOWN(TreeTest_Ctrl, MyTreeCtrl::OnTreeKeyDown)
 145     EVT_TREE_ITEM_ACTIVATED(TreeTest_Ctrl, MyTreeCtrl::OnItemActivated)
 146     EVT_RIGHT_DCLICK(MyTreeCtrl::OnRMouseDClick)
 147 END_EVENT_TABLE()
 148
 149 IMPLEMENT_APP(MyApp)
 150
 151 bool MyApp::OnInit()
 152 {
 153     // Create the main frame window
 154     MyFrame *frame = new MyFrame(wxT("wxTreeCtrl Test"), 50, 50, 450, 600);
 155
 156     // Show the frame
 157     frame->Show(true);
 158     SetTopWindow(frame);
 159
 160     return true;
 161 }
 162
 163
 164 // My frame constructor
 165 MyFrame::MyFrame(const wxString& title, int x, int y, int w, int h)
 166        : wxFrame((wxFrame *)NULL, wxID_ANY, title, wxPoint(x, y), wxSize(w, h)),
 167          m_treeCtrl(NULL)
 168 #if wxUSE_LOG
 169          , m_textCtrl(NULL)
 170 #endif // wxUSE_LOG
 171 {
 172     // This reduces flicker effects - even better would be to define
 173     // OnEraseBackground to do nothing. When the tree control's scrollbars are
 174     // show or hidden, the frame is sent a background erase event.
 175     SetBackgroundColour(wxColour(255, 255, 255));
 176
 177     // Give it an icon
 178     SetIcon(wxICON(mondrian));
 179
 180 #if wxUSE_MENUS
 181     // Make a menubar
 182     wxMenu *file_menu = new wxMenu,
 183            *style_menu = new wxMenu,
 184            *tree_menu = new wxMenu,
 185            *item_menu = new wxMenu;
 186
 187     file_menu->Append(TreeTest_About, wxT("&About..."));
 188     file_menu->AppendSeparator();
 189     file_menu->Append(TreeTest_Quit, wxT("E&xit\tAlt-X"));
 190
 191     style_menu->AppendCheckItem(TreeTest_TogButtons, wxT("Toggle &normal buttons"));
 192     style_menu->AppendCheckItem(TreeTest_TogTwist, wxT("Toggle &twister buttons"));
 193     style_menu->AppendCheckItem(TreeTest_ToggleButtons, wxT("Toggle image &buttons"));
 194     style_menu->AppendSeparator();
 195     style_menu->AppendCheckItem(TreeTest_TogLines, wxT("Toggle &connecting lines"));
 196     style_menu->AppendCheckItem(TreeTest_TogRootLines, wxT("Toggle &lines at root"));
 197     style_menu->AppendCheckItem(TreeTest_TogHideRoot, wxT("Toggle &hidden root"));
 198     style_menu->AppendCheckItem(TreeTest_TogBorder, wxT("Toggle &item border"));
 199     style_menu->AppendCheckItem(TreeTest_TogFullHighlight, wxT("Toggle &full row highlight"));
 200     style_menu->AppendCheckItem(TreeTest_TogEdit, wxT("Toggle &edit mode"));
 201 #ifndef NO_MULTIPLE_SELECTION
 202     style_menu->AppendCheckItem(TreeTest_ToggleSel, wxT("Toggle &selection mode"));
 203 #endif // NO_MULTIPLE_SELECTION
 204     style_menu->AppendCheckItem(TreeTest_ToggleImages, wxT("Toggle show ima&ges"));
 205     style_menu->Append(TreeTest_SetImageSize, wxT("Set image si&ze..."));
 206     style_menu->AppendSeparator();
 207     style_menu->Append(TreeTest_SetFgColour, wxT("Set &foreground colour..."));
 208     style_menu->Append(TreeTest_SetBgColour, wxT("Set &background colour..."));
 209     style_menu->AppendSeparator();
 210     style_menu->Append(TreeTest_ResetStyle, wxT("&Reset to default\tF10"));
 211
 212     tree_menu->Append(TreeTest_Recreate, wxT("&Recreate the tree"));
 213     tree_menu->Append(TreeTest_CollapseAndReset, wxT("C&ollapse and reset"));
 214     tree_menu->AppendSeparator();
 215     tree_menu->Append(TreeTest_AddItem, wxT("Append a &new item"));
 216     tree_menu->Append(TreeTest_InsertItem, wxT("&Insert a new item"));
 217     tree_menu->Append(TreeTest_Delete, wxT("&Delete this item"));
 218     tree_menu->Append(TreeTest_DeleteChildren, wxT("Delete &children"));
 219     tree_menu->Append(TreeTest_DeleteAll, wxT("Delete &all items"));
 220     tree_menu->Append(TreeTest_SelectRoot, wxT("Select root item"));
 221     tree_menu->AppendSeparator();
 222     tree_menu->Append(TreeTest_Count, wxT("Count children of current item"));
 223     tree_menu->Append(TreeTest_CountRec, wxT("Recursively count children of current item"));
 224     tree_menu->AppendSeparator();
 225     tree_menu->Append(TreeTest_Sort, wxT("Sort children of current item"));
 226     tree_menu->Append(TreeTest_SortRev, wxT("Sort in reversed order"));
 227     tree_menu->AppendSeparator();
 228     tree_menu->Append(TreeTest_EnsureVisible, wxT("Make the last item &visible"));
 229     tree_menu->AppendSeparator();
 230     tree_menu->Append(TreeTest_IncIndent, wxT("Add 5 points to indentation\tAlt-I"));
 231     tree_menu->Append(TreeTest_DecIndent, wxT("Reduce indentation by 5 points\tAlt-R"));
 232     tree_menu->AppendSeparator();
 233     tree_menu->Append(TreeTest_IncSpacing, wxT("Add 5 points to spacing\tCtrl-I"));
 234     tree_menu->Append(TreeTest_DecSpacing, wxT("Reduce spacing by 5 points\tCtrl-R"));
 235
 236     item_menu->Append(TreeTest_Dump, wxT("&Dump item children"));
 237     item_menu->Append(TreeTest_Rename, wxT("&Rename item..."));
 238
 239     item_menu->AppendSeparator();
 240     item_menu->Append(TreeTest_SetBold, wxT("Make item &bold"));
 241     item_menu->Append(TreeTest_ClearBold, wxT("Make item &not bold"));
 242     item_menu->AppendSeparator();
 243     item_menu->Append(TreeTest_ToggleIcon, wxT("Toggle the item's &icon"));
 244
 245 #ifndef NO_MULTIPLE_SELECTION
 246     item_menu->AppendSeparator();
 247     item_menu->Append(TreeTest_DumpSelected, wxT("Dump selected items\tAlt-D"));
 248     item_menu->Append(TreeTest_Select, wxT("Select current item\tAlt-S"));
 249     item_menu->Append(TreeTest_Unselect, wxT("Unselect everything\tAlt-U"));
 250 #endif // NO_MULTIPLE_SELECTION
 251
 252     wxMenuBar *menu_bar = new wxMenuBar;
 253     menu_bar->Append(file_menu, wxT("&File"));
 254     menu_bar->Append(style_menu, wxT("&Style"));
 255     menu_bar->Append(tree_menu, wxT("&Tree"));
 256     menu_bar->Append(item_menu, wxT("&Item"));
 257     SetMenuBar(menu_bar);
 258 #endif // wxUSE_MENUS
 259
 260 #if wxUSE_LOG
 261     // create the controls
 262     m_textCtrl = new wxTextCtrl(this, wxID_ANY, wxT(""),
 263                                 wxDefaultPosition, wxDefaultSize,
 264                                 wxTE_MULTILINE | wxSUNKEN_BORDER);
 265 #endif // wxUSE_LOG
 266
 267     CreateTreeWithDefStyle();
 268
 269     menu_bar->Check(TreeTest_ToggleImages, true);
 270
 271 #if wxUSE_STATUSBAR
 272     // create a status bar
 273     CreateStatusBar(2);
 274 #endif // wxUSE_STATUSBAR
 275
 276 #if wxUSE_LOG
 277 #ifdef __WXMOTIF__
 278     // For some reason, we get a memcpy crash in wxLogStream::DoLogStream
 279     // on gcc/wxMotif, if we use wxLogTextCtl. Maybe it's just gcc?
 280     delete wxLog::SetActiveTarget(new wxLogStderr);
 281 #else
 282     // set our text control as the log target
 283     wxLogTextCtrl *logWindow = new wxLogTextCtrl(m_textCtrl);
 284     delete wxLog::SetActiveTarget(logWindow);
 285 #endif
 286 #endif // wxUSE_LOG
 287 }
 288
 289 MyFrame::~MyFrame()
 290 {
 291 #if wxUSE_LOG
 292     delete wxLog::SetActiveTarget(NULL);
 293 #endif // wxUSE_LOG
 294 }
 295
 296 void MyFrame::CreateTreeWithDefStyle()
 297 {
 298     long style = wxTR_DEFAULT_STYLE |
 299 #ifndef NO_VARIABLE_HEIGHT
 300                  wxTR_HAS_VARIABLE_ROW_HEIGHT |
 301 #endif
 302                  wxTR_EDIT_LABELS;
 303
 304     CreateTree(style | wxSUNKEN_BORDER);
 305
 306     // as we don't know what wxTR_DEFAULT_STYLE could contain, test for
 307     // everything
 308     wxMenuBar *mbar = GetMenuBar();
 309     mbar->Check(TreeTest_TogButtons, (style & wxTR_HAS_BUTTONS) != 0);
 310     mbar->Check(TreeTest_TogButtons, (style & wxTR_TWIST_BUTTONS) != 0);
 311     mbar->Check(TreeTest_TogLines, (style & wxTR_NO_LINES) == 0);
 312     mbar->Check(TreeTest_TogRootLines, (style & wxTR_LINES_AT_ROOT) != 0);
 313     mbar->Check(TreeTest_TogHideRoot, (style & wxTR_HIDE_ROOT) != 0);
 314     mbar->Check(TreeTest_TogEdit, (style & wxTR_EDIT_LABELS) != 0);
 315     mbar->Check(TreeTest_TogBorder, (style & wxTR_ROW_LINES) != 0);
 316     mbar->Check(TreeTest_TogFullHighlight, (style & wxTR_FULL_ROW_HIGHLIGHT) != 0);
 317 }
 318
 319 void MyFrame::CreateTree(long style)
 320 {
 321     m_treeCtrl = new MyTreeCtrl(this, TreeTest_Ctrl,
 322                                 wxDefaultPosition, wxDefaultSize,
 323                                 style);
 324     Resize();
 325 }
 326
 327 void MyFrame::TogStyle(int id, long flag)
 328 {
 329     long style = m_treeCtrl->GetWindowStyle() ^ flag;
 330
 331     // most treectrl styles can't be changed on the fly using the native
 332     // control and the tree must be recreated
 333 #ifndef __WXMSW__
 334     m_treeCtrl->SetWindowStyle(style);
 335 #else // MSW
 336     delete m_treeCtrl;
 337     CreateTree(style);
 338 #endif // !MSW/MSW
 339
 340     GetMenuBar()->Check(id, (style & flag) != 0);
 341 }
 342
 343 void MyFrame::OnIdle(wxIdleEvent& event)
 344 {
 345 #if wxUSE_STATUSBAR
 346     if ( m_treeCtrl )
 347     {
 348         wxTreeItemId idRoot = m_treeCtrl->GetRootItem();
 349
 350         SetStatusText(wxString::Format
 351                       (
 352                         _T("Root/last item is %svisible/%svisible"),
 353                         m_treeCtrl->IsVisible(idRoot) ? _T("") : _T("not "),
 354                         m_treeCtrl->IsVisible(m_treeCtrl->GetLastChild(idRoot))
 355                             ? _T("") : _T("not ")
 356                       ), 1);
 357     }
 358 #endif // wxUSE_STATUSBAR
 359
 360     event.Skip();
 361 }
 362
 363 void MyFrame::OnSize(wxSizeEvent& event)
 364 {
 365     if ( m_treeCtrl
 366 #if wxUSE_LOG
 367                     && m_textCtrl
 368 #endif // wxUSE_LOG
 369                                   )
 370     {
 371         Resize();
 372     }
 373
 374     event.Skip();
 375 }
 376
 377 void MyFrame::Resize()
 378 {
 379     wxSize size = GetClientSize();
 380     m_treeCtrl->SetSize(0, 0, size.x, size.y
 381 #if !wxUSE_LOG
 382                                             );
 383 #else
 384                                             *2/3);
 385     m_textCtrl->SetSize(0, 2*size.y/3, size.x, size.y/3);
 386 #endif
 387 }
 388
 389 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 390 {
 391     Close(true);
 392 }
 393
 394 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 395 {
 396     wxMessageBox(wxT("Tree test sample\n")
 397                  wxT("(c) Julian Smart 1997, Vadim Zeitlin 1998"),
 398                  wxT("About tree test"),
 399                  wxOK | wxICON_INFORMATION, this);
 400 }
 401
 402 void MyFrame::OnRename(wxCommandEvent& WXUNUSED(event))
 403 {
 404     wxTreeItemId item = m_treeCtrl->GetSelection();
 405
 406     CHECK_ITEM( item );
 407
 408     // old code - now we edit in place
 409 #if 0
 410     static wxString s_text;
 411     s_text = wxGetTextFromUser(wxT("New name: "), wxT("Tree sample question"),
 412             s_text, this);
 413     if ( !s_text.empty() )
 414     {
 415         m_treeCtrl->SetItemText(item, s_text);
 416     }
 417 #endif // 0
 418
 419     // TODO demonstrate creating a custom edit control...
 420     (void)m_treeCtrl->EditLabel(item);
 421 }
 422
 423 void MyFrame::OnCount(wxCommandEvent& WXUNUSED(event))
 424 {
 425     wxTreeItemId item = m_treeCtrl->GetSelection();
 426
 427     CHECK_ITEM( item );
 428
 429     int i = m_treeCtrl->GetChildrenCount( item, false );
 430
 431     wxLogMessage(wxT("%d children"), i);
 432 }
 433
 434 void MyFrame::OnCountRec(wxCommandEvent& WXUNUSED(event))
 435 {
 436     wxTreeItemId item = m_treeCtrl->GetSelection();
 437
 438     CHECK_ITEM( item );
 439
 440     int i = m_treeCtrl->GetChildrenCount( item );
 441
 442     wxLogMessage(wxT("%d children"), i);
 443 }
 444
 445 void MyFrame::DoSort(bool reverse)
 446 {
 447     wxTreeItemId item = m_treeCtrl->GetSelection();
 448
 449     CHECK_ITEM( item );
 450
 451     m_treeCtrl->DoSortChildren(item, reverse);
 452 }
 453
 454 void MyFrame::OnDump(wxCommandEvent& WXUNUSED(event))
 455 {
 456     wxTreeItemId root = m_treeCtrl->GetSelection();
 457
 458     CHECK_ITEM( root );
 459
 460     m_treeCtrl->GetItemsRecursively(root);
 461 }
 462
 463 #ifndef NO_MULTIPLE_SELECTION
 464
 465 void MyFrame::OnToggleSel(wxCommandEvent& event)
 466 {
 467     TogStyle(event.GetId(), wxTR_MULTIPLE);
 468 }
 469
 470 void MyFrame::OnDumpSelected(wxCommandEvent& WXUNUSED(event))
 471 {
 472     wxArrayTreeItemIds array;
 473
 474     size_t count = m_treeCtrl->GetSelections(array);
 475     wxLogMessage(wxT("%u items selected"), count);
 476
 477     for ( size_t n = 0; n < count; n++ )
 478     {
 479         wxLogMessage(wxT("\t%s"), m_treeCtrl->GetItemText(array.Item(n)).c_str());
 480     }
 481 }
 482
 483 void MyFrame::OnSelect(wxCommandEvent& WXUNUSED(event))
 484 {
 485     m_treeCtrl->SelectItem(m_treeCtrl->GetSelection());
 486 }
 487
 488 void MyFrame::OnSelectRoot(wxCommandEvent& WXUNUSED(event))
 489 {
 490     m_treeCtrl->SelectItem(m_treeCtrl->GetRootItem());
 491 }
 492
 493 void MyFrame::OnUnselect(wxCommandEvent& WXUNUSED(event))
 494 {
 495     m_treeCtrl->UnselectAll();
 496 }
 497
 498 #endif // NO_MULTIPLE_SELECTION
 499
 500 void MyFrame::DoSetBold(bool bold)
 501 {
 502     wxTreeItemId item = m_treeCtrl->GetSelection();
 503
 504     CHECK_ITEM( item );
 505
 506     m_treeCtrl->SetItemBold(item, bold);
 507 }
 508
 509 void MyFrame::OnDelete(wxCommandEvent& WXUNUSED(event))
 510 {
 511     wxTreeItemId item = m_treeCtrl->GetSelection();
 512
 513     CHECK_ITEM( item );
 514
 515     m_treeCtrl->Delete(item);
 516 }
 517
 518 void MyFrame::OnDeleteChildren(wxCommandEvent& WXUNUSED(event))
 519 {
 520     wxTreeItemId item = m_treeCtrl->GetSelection();
 521
 522     CHECK_ITEM( item );
 523
 524     m_treeCtrl->DeleteChildren(item);
 525 }
 526
 527 void MyFrame::OnDeleteAll(wxCommandEvent& WXUNUSED(event))
 528 {
 529     m_treeCtrl->DeleteAllItems();
 530 }
 531
 532 void MyFrame::OnRecreate(wxCommandEvent& event)
 533 {
 534     OnDeleteAll(event);
 535     m_treeCtrl->AddTestItemsToTree(5, 2);
 536 }
 537
 538 void MyFrame::OnSetImageSize(wxCommandEvent& WXUNUSED(event))
 539 {
 540     int size = wxGetNumberFromUser(wxT("Enter the size for the images to use"),
 541                                     wxT("Size: "),
 542                                     wxT("TreeCtrl sample"),
 543                                     m_treeCtrl->ImageSize());
 544     if ( size == -1 )
 545         return;
 546
 547     m_treeCtrl->CreateImageList(size);
 548     wxGetApp().SetShowImages(true);
 549 }
 550
 551 void MyFrame::OnToggleImages(wxCommandEvent& WXUNUSED(event))
 552 {
 553     if ( wxGetApp().ShowImages() )
 554     {
 555         m_treeCtrl->CreateImageList(-1);
 556         wxGetApp().SetShowImages(false);
 557     }
 558     else
 559     {
 560         m_treeCtrl->CreateImageList(0);
 561         wxGetApp().SetShowImages(true);
 562     }
 563 }
 564
 565 void MyFrame::OnToggleButtons(wxCommandEvent& WXUNUSED(event))
 566 {
 567 #if USE_GENERIC_TREECTRL || !defined(__WXMSW__)
 568     if ( wxGetApp().ShowButtons() )
 569     {
 570         m_treeCtrl->CreateButtonsImageList(-1);
 571         wxGetApp().SetShowButtons(false);
 572     }
 573     else
 574     {
 575         m_treeCtrl->CreateButtonsImageList(15);
 576         wxGetApp().SetShowButtons(true);
 577     }
 578 #endif
 579 }
 580
 581 void MyFrame::OnCollapseAndReset(wxCommandEvent& WXUNUSED(event))
 582 {
 583     m_treeCtrl->CollapseAndReset(m_treeCtrl->GetRootItem());
 584 }
 585
 586 void MyFrame::OnEnsureVisible(wxCommandEvent& WXUNUSED(event))
 587 {
 588     m_treeCtrl->DoEnsureVisible();
 589 }
 590
 591 void MyFrame::OnInsertItem(wxCommandEvent& WXUNUSED(event))
 592 {
 593     int image = wxGetApp().ShowImages() ? MyTreeCtrl::TreeCtrlIcon_File : -1;
 594     m_treeCtrl->InsertItem(m_treeCtrl->GetRootItem(), image, wxT("2nd item"));
 595 }
 596
 597 void MyFrame::OnAddItem(wxCommandEvent& WXUNUSED(event))
 598 {
 599     static int s_num = 0;
 600
 601     wxString text;
 602     text.Printf(wxT("Item #%d"), ++s_num);
 603
 604     m_treeCtrl->AppendItem(m_treeCtrl->GetRootItem(),
 605                            text /*,
 606                            MyTreeCtrl::TreeCtrlIcon_File */ );
 607 }
 608
 609 void MyFrame::OnIncIndent(wxCommandEvent& WXUNUSED(event))
 610 {
 611     unsigned int indent = m_treeCtrl->GetIndent();
 612     if (indent < 100)
 613         m_treeCtrl->SetIndent( indent+5 );
 614 }
 615
 616 void MyFrame::OnDecIndent(wxCommandEvent& WXUNUSED(event))
 617 {
 618     unsigned int indent = m_treeCtrl->GetIndent();
 619     if (indent > 10)
 620         m_treeCtrl->SetIndent( indent-5 );
 621 }
 622
 623 void MyFrame::OnIncSpacing(wxCommandEvent& WXUNUSED(event))
 624 {
 625     unsigned int indent = m_treeCtrl->GetSpacing();
 626     if (indent < 100)
 627         m_treeCtrl->SetSpacing( indent+5 );
 628 }
 629
 630 void MyFrame::OnDecSpacing(wxCommandEvent& WXUNUSED(event))
 631 {
 632     unsigned int indent = m_treeCtrl->GetSpacing();
 633     if (indent > 10)
 634         m_treeCtrl->SetSpacing( indent-5 );
 635 }
 636
 637 void MyFrame::OnToggleIcon(wxCommandEvent& WXUNUSED(event))
 638 {
 639     wxTreeItemId item = m_treeCtrl->GetSelection();
 640
 641     CHECK_ITEM( item );
 642
 643     m_treeCtrl->DoToggleIcon(item);
 644 }
 645
 646 void MyFrame::OnSetFgColour(wxCommandEvent& WXUNUSED(event))
 647 {
 648     wxColour col = wxGetColourFromUser(this, m_treeCtrl->GetForegroundColour());
 649     if ( col.Ok() )
 650         m_treeCtrl->SetForegroundColour(col);
 651 }
 652
 653 void MyFrame::OnSetBgColour(wxCommandEvent& WXUNUSED(event))
 654 {
 655     wxColour col = wxGetColourFromUser(this, m_treeCtrl->GetBackgroundColour());
 656     if ( col.Ok() )
 657         m_treeCtrl->SetBackgroundColour(col);
 658 }
 659
 660 // MyTreeCtrl implementation
 661 #if USE_GENERIC_TREECTRL
 662 IMPLEMENT_DYNAMIC_CLASS(MyTreeCtrl, wxGenericTreeCtrl)
 663 #else
 664 IMPLEMENT_DYNAMIC_CLASS(MyTreeCtrl, wxTreeCtrl)
 665 #endif
 666
 667 MyTreeCtrl::MyTreeCtrl(wxWindow *parent, const wxWindowID id,
 668                        const wxPoint& pos, const wxSize& size,
 669                        long style)
 670           : wxTreeCtrl(parent, id, pos, size, style)
 671 {
 672     m_reverseSort = false;
 673
 674     CreateImageList();
 675
 676     // Add some items to the tree
 677     AddTestItemsToTree(5, 2);
 678 }
 679
 680 void MyTreeCtrl::CreateImageList(int size)
 681 {
 682     if ( size == -1 )
 683     {
 684         SetImageList(NULL);
 685         return;
 686     }
 687     if ( size == 0 )
 688         size = m_imageSize;
 689     else
 690         m_imageSize = size;
 691
 692     // Make an image list containing small icons
 693     wxImageList *images = new wxImageList(size, size, true);
 694
 695     // should correspond to TreeCtrlIcon_xxx enum
 696     wxBusyCursor wait;
 697     wxIcon icons[5];
 698     icons[0] = wxIcon(icon1_xpm);
 699     icons[1] = wxIcon(icon2_xpm);
 700     icons[2] = wxIcon(icon3_xpm);
 701     icons[3] = wxIcon(icon4_xpm);
 702     icons[4] = wxIcon(icon5_xpm);
 703
 704     int sizeOrig = icons[0].GetWidth();
 705     for ( size_t i = 0; i < WXSIZEOF(icons); i++ )
 706     {
 707         if ( size == sizeOrig )
 708         {
 709             images->Add(icons[i]);
 710         }
 711         else
 712         {
 713             images->Add(wxBitmap(wxBitmap(icons[i]).ConvertToImage().Rescale(size, size)));
 714         }
 715     }
 716
 717     AssignImageList(images);
 718 }
 719
 720 #if USE_GENERIC_TREECTRL || !defined(__WXMSW__)
 721 void MyTreeCtrl::CreateButtonsImageList(int size)
 722 {
 723     if ( size == -1 )
 724     {
 725         SetButtonsImageList(NULL);
 726         return;
 727     }
 728
 729     // Make an image list containing small icons
 730     wxImageList *images = new wxImageList(size, size, true);
 731
 732     // should correspond to TreeCtrlIcon_xxx enum
 733     wxBusyCursor wait;
 734     wxIcon icons[4];
 735     icons[0] = wxIcon(icon3_xpm);   // closed
 736     icons[1] = wxIcon(icon3_xpm);   // closed, selected
 737     icons[2] = wxIcon(icon5_xpm);   // open
 738     icons[3] = wxIcon(icon5_xpm);   // open, selected
 739
 740     for ( size_t i = 0; i < WXSIZEOF(icons); i++ )
 741     {
 742         int sizeOrig = icons[i].GetWidth();
 743         if ( size == sizeOrig )
 744         {
 745             images->Add(icons[i]);
 746         }
 747         else
 748         {
 749             images->Add(wxBitmap(wxBitmap(icons[i]).ConvertToImage().Rescale(size, size)));
 750         }
 751     }
 752
 753     AssignButtonsImageList(images);
 754 #else
 755 void MyTreeCtrl::CreateButtonsImageList(int WXUNUSED(size))
 756 {
 757 #endif
 758 }
 759
 760 int MyTreeCtrl::OnCompareItems(const wxTreeItemId& item1,
 761                                const wxTreeItemId& item2)
 762 {
 763     if ( m_reverseSort )
 764     {
 765         // just exchange 1st and 2nd items
 766         return wxTreeCtrl::OnCompareItems(item2, item1);
 767     }
 768     else
 769     {
 770         return wxTreeCtrl::OnCompareItems(item1, item2);
 771     }
 772 }
 773
 774 void MyTreeCtrl::AddItemsRecursively(const wxTreeItemId& idParent,
 775                                      size_t numChildren,
 776                                      size_t depth,
 777                                      size_t folder)
 778 {
 779     if ( depth > 0 )
 780     {
 781         bool hasChildren = depth > 1;
 782
 783         wxString str;
 784         for ( size_t n = 0; n < numChildren; n++ )
 785         {
 786             // at depth 1 elements won't have any more children
 787             if ( hasChildren )
 788                 str.Printf(wxT("%s child %d"), wxT("Folder"), n + 1);
 789             else
 790                 str.Printf(wxT("%s child %d.%d"), wxT("File"), folder, n + 1);
 791
 792             // here we pass to AppendItem() normal and selected item images (we
 793             // suppose that selected image follows the normal one in the enum)
 794             int image, imageSel;
 795             if ( wxGetApp().ShowImages() )
 796             {
 797                 image = depth == 1 ? TreeCtrlIcon_File : TreeCtrlIcon_Folder;
 798                 imageSel = image + 1;
 799             }
 800             else
 801             {
 802                 image = imageSel = -1;
 803             }
 804             wxTreeItemId id = AppendItem(idParent, str, image, imageSel,
 805                                          new MyTreeItemData(str));
 806
 807             // and now we also set the expanded one (only for the folders)
 808             if ( hasChildren && wxGetApp().ShowImages() )
 809             {
 810                 SetItemImage(id, TreeCtrlIcon_FolderOpened,
 811                              wxTreeItemIcon_Expanded);
 812             }
 813
 814             // remember the last child for OnEnsureVisible()
 815             if ( !hasChildren && n == numChildren - 1 )
 816             {
 817                 m_lastItem = id;
 818             }
 819
 820             AddItemsRecursively(id, numChildren, depth - 1, n + 1);
 821         }
 822     }
 823     //else: done!
 824 }
 825
 826 void MyTreeCtrl::AddTestItemsToTree(size_t numChildren,
 827                                     size_t depth)
 828 {
 829     int image = wxGetApp().ShowImages() ? MyTreeCtrl::TreeCtrlIcon_Folder : -1;
 830     wxTreeItemId rootId = AddRoot(wxT("Root"),
 831                                   image, image,
 832                                   new MyTreeItemData(wxT("Root item")));
 833     if ( image != -1 )
 834     {
 835         SetItemImage(rootId, TreeCtrlIcon_FolderOpened, wxTreeItemIcon_Expanded);
 836     }
 837
 838     AddItemsRecursively(rootId, numChildren, depth, 0);
 839
 840     // set some colours/fonts for testing
 841     SetItemFont(rootId, *wxITALIC_FONT);
 842
 843     wxTreeItemIdValue cookie;
 844     wxTreeItemId id = GetFirstChild(rootId, cookie);
 845     SetItemTextColour(id, *wxBLUE);
 846
 847     id = GetNextChild(rootId, cookie);
 848     id = GetNextChild(rootId, cookie);
 849     SetItemTextColour(id, *wxRED);
 850     SetItemBackgroundColour(id, *wxLIGHT_GREY);
 851 }
 852
 853 void MyTreeCtrl::GetItemsRecursively(const wxTreeItemId& idParent,
 854                                      wxTreeItemIdValue cookie)
 855 {
 856     wxTreeItemId id;
 857
 858     if ( !cookie )
 859         id = GetFirstChild(idParent, cookie);
 860     else
 861         id = GetNextChild(idParent, cookie);
 862
 863     if ( !id.IsOk() )
 864         return;
 865
 866     wxString text = GetItemText(id);
 867     wxLogMessage(text);
 868
 869     if (ItemHasChildren(id))
 870         GetItemsRecursively(id);
 871
 872     GetItemsRecursively(idParent, cookie);
 873 }
 874
 875 void MyTreeCtrl::DoToggleIcon(const wxTreeItemId& item)
 876 {
 877     int image = GetItemImage(item) == TreeCtrlIcon_Folder ? TreeCtrlIcon_File
 878                                                           : TreeCtrlIcon_Folder;
 879
 880     SetItemImage(item, image);
 881 }
 882
 883
 884 // avoid repetition
 885 #define TREE_EVENT_HANDLER(name)                                 \
 886 void MyTreeCtrl::name(wxTreeEvent& event)                        \
 887 {                                                                \
 888     wxLogMessage(wxT(#name));                                    \
 889     SetLastItem(wxTreeItemId());                                 \
 890     event.Skip();                                                \
 891 }
 892
 893 TREE_EVENT_HANDLER(OnBeginRDrag)
 894 TREE_EVENT_HANDLER(OnDeleteItem)
 895 TREE_EVENT_HANDLER(OnGetInfo)
 896 TREE_EVENT_HANDLER(OnSetInfo)
 897 TREE_EVENT_HANDLER(OnItemExpanded)
 898 TREE_EVENT_HANDLER(OnItemExpanding)
 899 TREE_EVENT_HANDLER(OnItemCollapsed)
 900 TREE_EVENT_HANDLER(OnSelChanged)
 901 TREE_EVENT_HANDLER(OnSelChanging)
 902
 903 #undef TREE_EVENT_HANDLER
 904
 905 void LogKeyEvent(const wxChar *name, const wxKeyEvent& event)
 906 {
 907     wxString key;
 908     long keycode = event.GetKeyCode();
 909     {
 910         switch ( keycode )
 911         {
 912             case WXK_BACK: key = wxT("BACK"); break;
 913             case WXK_TAB: key = wxT("TAB"); break;
 914             case WXK_RETURN: key = wxT("RETURN"); break;
 915             case WXK_ESCAPE: key = wxT("ESCAPE"); break;
 916             case WXK_SPACE: key = wxT("SPACE"); break;
 917             case WXK_DELETE: key = wxT("DELETE"); break;
 918             case WXK_START: key = wxT("START"); break;
 919             case WXK_LBUTTON: key = wxT("LBUTTON"); break;
 920             case WXK_RBUTTON: key = wxT("RBUTTON"); break;
 921             case WXK_CANCEL: key = wxT("CANCEL"); break;
 922             case WXK_MBUTTON: key = wxT("MBUTTON"); break;
 923             case WXK_CLEAR: key = wxT("CLEAR"); break;
 924             case WXK_SHIFT: key = wxT("SHIFT"); break;
 925             case WXK_ALT: key = wxT("ALT"); break;
 926             case WXK_CONTROL: key = wxT("CONTROL"); break;
 927             case WXK_MENU: key = wxT("MENU"); break;
 928             case WXK_PAUSE: key = wxT("PAUSE"); break;
 929             case WXK_CAPITAL: key = wxT("CAPITAL"); break;
 930             case WXK_PRIOR: key = wxT("PRIOR"); break;
 931             case WXK_NEXT: key = wxT("NEXT"); break;
 932             case WXK_END: key = wxT("END"); break;
 933             case WXK_HOME: key = wxT("HOME"); break;
 934             case WXK_LEFT: key = wxT("LEFT"); break;
 935             case WXK_UP: key = wxT("UP"); break;
 936             case WXK_RIGHT: key = wxT("RIGHT"); break;
 937             case WXK_DOWN: key = wxT("DOWN"); break;
 938             case WXK_SELECT: key = wxT("SELECT"); break;
 939             case WXK_PRINT: key = wxT("PRINT"); break;
 940             case WXK_EXECUTE: key = wxT("EXECUTE"); break;
 941             case WXK_SNAPSHOT: key = wxT("SNAPSHOT"); break;
 942             case WXK_INSERT: key = wxT("INSERT"); break;
 943             case WXK_HELP: key = wxT("HELP"); break;
 944             case WXK_NUMPAD0: key = wxT("NUMPAD0"); break;
 945             case WXK_NUMPAD1: key = wxT("NUMPAD1"); break;
 946             case WXK_NUMPAD2: key = wxT("NUMPAD2"); break;
 947             case WXK_NUMPAD3: key = wxT("NUMPAD3"); break;
 948             case WXK_NUMPAD4: key = wxT("NUMPAD4"); break;
 949             case WXK_NUMPAD5: key = wxT("NUMPAD5"); break;
 950             case WXK_NUMPAD6: key = wxT("NUMPAD6"); break;
 951             case WXK_NUMPAD7: key = wxT("NUMPAD7"); break;
 952             case WXK_NUMPAD8: key = wxT("NUMPAD8"); break;
 953             case WXK_NUMPAD9: key = wxT("NUMPAD9"); break;
 954             case WXK_MULTIPLY: key = wxT("MULTIPLY"); break;
 955             case WXK_ADD: key = wxT("ADD"); break;
 956             case WXK_SEPARATOR: key = wxT("SEPARATOR"); break;
 957             case WXK_SUBTRACT: key = wxT("SUBTRACT"); break;
 958             case WXK_DECIMAL: key = wxT("DECIMAL"); break;
 959             case WXK_DIVIDE: key = wxT("DIVIDE"); break;
 960             case WXK_F1: key = wxT("F1"); break;
 961             case WXK_F2: key = wxT("F2"); break;
 962             case WXK_F3: key = wxT("F3"); break;
 963             case WXK_F4: key = wxT("F4"); break;
 964             case WXK_F5: key = wxT("F5"); break;
 965             case WXK_F6: key = wxT("F6"); break;
 966             case WXK_F7: key = wxT("F7"); break;
 967             case WXK_F8: key = wxT("F8"); break;
 968             case WXK_F9: key = wxT("F9"); break;
 969             case WXK_F10: key = wxT("F10"); break;
 970             case WXK_F11: key = wxT("F11"); break;
 971             case WXK_F12: key = wxT("F12"); break;
 972             case WXK_F13: key = wxT("F13"); break;
 973             case WXK_F14: key = wxT("F14"); break;
 974             case WXK_F15: key = wxT("F15"); break;
 975             case WXK_F16: key = wxT("F16"); break;
 976             case WXK_F17: key = wxT("F17"); break;
 977             case WXK_F18: key = wxT("F18"); break;
 978             case WXK_F19: key = wxT("F19"); break;
 979             case WXK_F20: key = wxT("F20"); break;
 980             case WXK_F21: key = wxT("F21"); break;
 981             case WXK_F22: key = wxT("F22"); break;
 982             case WXK_F23: key = wxT("F23"); break;
 983             case WXK_F24: key = wxT("F24"); break;
 984             case WXK_NUMLOCK: key = wxT("NUMLOCK"); break;
 985             case WXK_SCROLL: key = wxT("SCROLL"); break;
 986             case WXK_PAGEUP: key = wxT("PAGEUP"); break;
 987             case WXK_PAGEDOWN: key = wxT("PAGEDOWN"); break;
 988             case WXK_NUMPAD_SPACE: key = wxT("NUMPAD_SPACE"); break;
 989             case WXK_NUMPAD_TAB: key = wxT("NUMPAD_TAB"); break;
 990             case WXK_NUMPAD_ENTER: key = wxT("NUMPAD_ENTER"); break;
 991             case WXK_NUMPAD_F1: key = wxT("NUMPAD_F1"); break;
 992             case WXK_NUMPAD_F2: key = wxT("NUMPAD_F2"); break;
 993             case WXK_NUMPAD_F3: key = wxT("NUMPAD_F3"); break;
 994             case WXK_NUMPAD_F4: key = wxT("NUMPAD_F4"); break;
 995             case WXK_NUMPAD_HOME: key = wxT("NUMPAD_HOME"); break;
 996             case WXK_NUMPAD_LEFT: key = wxT("NUMPAD_LEFT"); break;
 997             case WXK_NUMPAD_UP: key = wxT("NUMPAD_UP"); break;
 998             case WXK_NUMPAD_RIGHT: key = wxT("NUMPAD_RIGHT"); break;
 999             case WXK_NUMPAD_DOWN: key = wxT("NUMPAD_DOWN"); break;
1000             case WXK_NUMPAD_PRIOR: key = wxT("NUMPAD_PRIOR"); break;
1001             case WXK_NUMPAD_PAGEUP: key = wxT("NUMPAD_PAGEUP"); break;
1002             case WXK_NUMPAD_PAGEDOWN: key = wxT("NUMPAD_PAGEDOWN"); break;
1003             case WXK_NUMPAD_END: key = wxT("NUMPAD_END"); break;
1004             case WXK_NUMPAD_BEGIN: key = wxT("NUMPAD_BEGIN"); break;
1005             case WXK_NUMPAD_INSERT: key = wxT("NUMPAD_INSERT"); break;
1006             case WXK_NUMPAD_DELETE: key = wxT("NUMPAD_DELETE"); break;
1007             case WXK_NUMPAD_EQUAL: key = wxT("NUMPAD_EQUAL"); break;
1008             case WXK_NUMPAD_MULTIPLY: key = wxT("NUMPAD_MULTIPLY"); break;
1009             case WXK_NUMPAD_ADD: key = wxT("NUMPAD_ADD"); break;
1010             case WXK_NUMPAD_SEPARATOR: key = wxT("NUMPAD_SEPARATOR"); break;
1011             case WXK_NUMPAD_SUBTRACT: key = wxT("NUMPAD_SUBTRACT"); break;
1012             case WXK_NUMPAD_DECIMAL: key = wxT("NUMPAD_DECIMAL"); break;
1013
1014             default:
1015             {
1016                if ( wxIsprint((int)keycode) )
1017                    key.Printf(wxT("'%c'"), (char)keycode);
1018                else if ( keycode > 0 && keycode < 27 )
1019                    key.Printf(_("Ctrl-%c"), wxT('A') + keycode - 1);
1020                else
1021                    key.Printf(wxT("unknown (%ld)"), keycode);
1022             }
1023         }
1024     }
1025
1026     wxLogMessage( wxT("%s event: %s (flags = %c%c%c%c)"),
1027                   name,
1028                   key.c_str(),
1029                   event.ControlDown() ? wxT('C') : wxT('-'),
1030                   event.AltDown() ? wxT('A') : wxT('-'),
1031                   event.ShiftDown() ? wxT('S') : wxT('-'),
1032                   event.MetaDown() ? wxT('M') : wxT('-'));
1033 }
1034
1035 void MyTreeCtrl::OnTreeKeyDown(wxTreeEvent& event)
1036 {
1037     LogKeyEvent(wxT("Tree key down "), event.GetKeyEvent());
1038
1039     event.Skip();
1040 }
1041
1042 void MyTreeCtrl::OnBeginDrag(wxTreeEvent& event)
1043 {
1044     // need to explicitly allow drag
1045     if ( event.GetItem() != GetRootItem() )
1046     {
1047         m_draggedItem = event.GetItem();
1048
1049         wxLogMessage(wxT("OnBeginDrag: started dragging %s"),
1050                      GetItemText(m_draggedItem).c_str());
1051
1052         event.Allow();
1053     }
1054     else
1055     {
1056         wxLogMessage(wxT("OnBeginDrag: this item can't be dragged."));
1057     }
1058 }
1059
1060 void MyTreeCtrl::OnEndDrag(wxTreeEvent& event)
1061 {
1062     wxTreeItemId itemSrc = m_draggedItem,
1063                  itemDst = event.GetItem();
1064     m_draggedItem = (wxTreeItemId)0l;
1065
1066     // where to copy the item?
1067     if ( itemDst.IsOk() && !ItemHasChildren(itemDst) )
1068     {
1069         // copy to the parent then
1070         itemDst = GetItemParent(itemDst);
1071     }
1072
1073     if ( !itemDst.IsOk() )
1074     {
1075         wxLogMessage(wxT("OnEndDrag: can't drop here."));
1076
1077         return;
1078     }
1079
1080     wxString text = GetItemText(itemSrc);
1081     wxLogMessage(wxT("OnEndDrag: '%s' copied to '%s'."),
1082                  text.c_str(), GetItemText(itemDst).c_str());
1083
1084     // just do append here - we could also insert it just before/after the item
1085     // on which it was dropped, but this requires slightly more work... we also
1086     // completely ignore the client data and icon of the old item but could
1087     // copy them as well.
1088     //
1089     // Finally, we only copy one item here but we might copy the entire tree if
1090     // we were dragging a folder.
1091     int image = wxGetApp().ShowImages() ? TreeCtrlIcon_File : -1;
1092     AppendItem(itemDst, text, image);
1093 }
1094
1095 void MyTreeCtrl::OnBeginLabelEdit(wxTreeEvent& event)
1096 {
1097     wxLogMessage(wxT("OnBeginLabelEdit"));
1098
1099     // for testing, prevent this item's label editing
1100     wxTreeItemId itemId = event.GetItem();
1101     if ( IsTestItem(itemId) )
1102     {
1103         wxMessageBox(wxT("You can't edit this item."));
1104
1105         event.Veto();
1106     }
1107 }
1108
1109 void MyTreeCtrl::OnEndLabelEdit(wxTreeEvent& event)
1110 {
1111     wxLogMessage(wxT("OnEndLabelEdit"));
1112
1113     // don't allow anything except letters in the labels
1114     if ( !event.GetLabel().IsWord() )
1115     {
1116         wxMessageBox(wxT("The new label should be a single word."));
1117
1118         event.Veto();
1119     }
1120 }
1121
1122 void MyTreeCtrl::OnItemCollapsing(wxTreeEvent& event)
1123 {
1124     wxLogMessage(wxT("OnItemCollapsing"));
1125
1126     // for testing, prevent the user from collapsing the first child folder
1127     wxTreeItemId itemId = event.GetItem();
1128     if ( IsTestItem(itemId) )
1129     {
1130         wxMessageBox(wxT("You can't collapse this item."));
1131
1132         event.Veto();
1133     }
1134 }
1135
1136 void MyTreeCtrl::OnItemActivated(wxTreeEvent& event)
1137 {
1138     // show some info about this item
1139     wxTreeItemId itemId = event.GetItem();
1140     MyTreeItemData *item = (MyTreeItemData *)GetItemData(itemId);
1141
1142     if ( item != NULL )
1143     {
1144         item->ShowInfo(this);
1145     }
1146
1147     wxLogMessage(wxT("OnItemActivated"));
1148 }
1149
1150 void MyTreeCtrl::OnItemRightClick(wxTreeEvent& event)
1151 {
1152     ShowMenu(event.GetItem(), event.GetPoint());
1153 }
1154
1155 void MyTreeCtrl::OnContextMenu(wxContextMenuEvent& event)
1156 {
1157     wxPoint pt = event.GetPosition();
1158     wxTreeItemId item = GetSelection();
1159     wxLogMessage(wxT("OnContextMenu at screen coords (%i, %i)"), pt.x, pt.y);
1160
1161     //check if event was generated by keyboard (MSW-specific?)
1162     if (pt.x==-1 && pt.y==-1) //(this is how MSW indicates it)
1163     {
1164         //attempt to guess where to show the menu
1165         if (item.IsOk())
1166         {
1167             //if an item was clicked, show menu to the right of it
1168             wxRect rect;
1169             GetBoundingRect(item, rect, true); //true = only the label
1170             pt = wxPoint(rect.GetRight(), rect.GetTop());
1171         }
1172         else
1173         {
1174             pt = wxPoint(0, 0);
1175         }
1176     }
1177     else
1178     {
1179         //event was generated by mouse, use supplied coords
1180         pt = ScreenToClient(pt);
1181     }
1182
1183     ShowMenu(item, pt);
1184 }
1185
1186 void MyTreeCtrl::ShowMenu(wxTreeItemId id, const wxPoint& pt)
1187 {
1188     wxString title;
1189     if ( id.IsOk() )
1190     {
1191         title << wxT("Menu for ") << GetItemText(id);
1192     }
1193     else
1194     {
1195         title = wxT("Menu for no particular item");
1196     }
1197
1198 #if wxUSE_MENUS
1199     wxMenu menu(title);
1200     menu.Append(TreeTest_About, wxT("&About..."));
1201     menu.Append(TreeTest_Dump, wxT("&Dump"));
1202
1203     PopupMenu(&menu, pt);
1204 #endif // wxUSE_MENUS
1205 }
1206
1207 void MyTreeCtrl::OnRMouseDClick(wxMouseEvent& event)
1208 {
1209     wxTreeItemId id = HitTest(event.GetPosition());
1210     if ( !id )
1211         wxLogMessage(wxT("No item under mouse"));
1212     else
1213     {
1214         MyTreeItemData *item = (MyTreeItemData *)GetItemData(id);
1215         if ( item )
1216             wxLogMessage(wxT("Item '%s' under mouse"), item->GetDesc());
1217     }
1218 }
1219
1220 static inline const wxChar *Bool2String(bool b)
1221 {
1222     return b ? wxT("") : wxT("not ");
1223 }
1224
1225 void MyTreeItemData::ShowInfo(wxTreeCtrl *tree)
1226 {
1227     wxLogMessage(wxT("Item '%s': %sselected, %sexpanded, %sbold,\n")
1228                  wxT("%u children (%u immediately under this item)."),
1229                  m_desc.c_str(),
1230                  Bool2String(tree->IsSelected(GetId())),
1231                  Bool2String(tree->IsExpanded(GetId())),
1232                  Bool2String(tree->IsBold(GetId())),
1233                  tree->GetChildrenCount(GetId()),
1234                  tree->GetChildrenCount(GetId(), false));
1235 }